Teams private channel messages are moving to group mailboxes, and compliance managers must act before September 20, 2025, to avoid data loss and compliance gaps.
Microsoft is reengineering private channels to improve scalability and simplify governance. This change impacts Microsoft Purview eDiscovery, retention, and DLP policies.
This update was announced in the Microsoft Teams Blog and flagged in the Microsoft 365 Message Center (MC1134737).
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